/*
 * @Description: ++、--
 * @Author: zzj
 * @Date: 2021-08-31 15:18:10
 * @LastEditors: zzj
 * @LastEditTime: 2021-09-14 08:54:41
 */

var n = 10;
var a = n++;
console.log(a,n)
var b = ++n;
console.log(b,n)
var c = n--;
console.log(c,n)
var d = --n;
console.log(d,n)